Method of producing porous ceramic filter, using cordierite comp

Details Method of producing porous ceramic filter, using cordierite comp Method of producing porous ceramic filter, using cordierite comp

1991-03-27

1993-02-09

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

264 63, 26417712, B29C 6500, C04B 3564

Patent

active

051851105

ABSTRACT:
A method of producing a porous ceramic filter, using a cordierite precursor or starting composition including a talc powder component and a silica powder component, such that particles of the talc powder component and the silica powder component whose size is not less than 150 .mu.m constitute not more than 3% by weight of the starting composition, while particles of the talc and silica powder components whose size is not more than 45 .mu.m constitute not more than 25% by weight of the starting composition. A green body for the porous ceramic honeycomb filter formed of this starting composition is fired to react the starting composition to form cordierite and produce the desired porous ceramic honeycomb filter.

REFERENCES:
patent: 4280845 (1981-07-01), Matsuhisa et al.
patent: 5030398 (1991-07-01), Hamanaka et al.

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